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FloPatch for Prevention of Hypotension After Induction of General Anesthesia

NCT06316817 · Status: COMPLETED · Type: OBSERVATIONAL · Enrollment: 172

Last updated 2025-06-05

No results posted yet for this study

Summary

This study is being conducted to find out if a special device called FloPatch™, which sticks to a persons skin and uses ultrasound to check the blood flow in their neck, can tell if someone going to have low blood pressure after they get put to sleep for surgery. The investigators will be testing this in adults who are having elective non-heart surgery. Basically, the goal is to see if this device can help predict who might have low blood pressure during surgery.

Hypotension is a common side-effect of general anesthesia induction, and is related to adverse outcomes, including significantly increasing risk of one-year mortality. Even short durations of intraoperative hypotension have been associated with acute kidney injury (AKI) and myocardial injury. Myocardial injury after non-cardiac surgery (MINS) is a common postoperative complication associated with adverse cardiovascular outcomes, and intraoperative hypotension is believed to be involved in its development.

In the preoperative setting, a systematic review of 50 studies (2,260 patients) evaluating techniques to assess adult patients with refractory hypotension or signs of organ hypoperfusion found that half of all patients were fluid-responsive, pointing to volume status as a significant risk factor, while also presenting a challenge in distinguishing fluid-responders from non-responders. For surgical patients, preoperative fasting, hypertonic bowel preparations, anesthetic agents, and positive pressure ventilation all contribute to reduced effective circulating blood volume. Optimized fluid therapy remains the cornerstone of treatment of hypovolemia, with excellent effectiveness. Since the liberal use of fluids may result in fluid overload, which is associated with the development of pulmonary edema, wound infection, postoperative ileus, and anastomotic leakage, it is imperative to identify those patients who may benefit from it.

The hypothesis is that the corrected Flow Time (cFT) measured by the FloPatch will help predict hypotension after the induction of general anesthesia.

Conditions

  • Hypotension on Induction

Interventions

DEVICE

FloPatch

A novel, hands-free ultrasound patch for continuous monitoring of quantitative Doppler in the carotid artery.

Sponsors & Collaborators

  • Mount Sinai Hospital, Canada

    lead OTHER

Principal Investigators

  • James Khan, MD · Staff Anesthesiologist

Eligibility

Min Age
18 Years
Sex
ALL
Healthy Volunteers
No

Timeline & Regulatory

Start
2024-04-01
Primary Completion
2024-09-26
Completion
2024-09-26
FDA Device
Yes

Countries

  • Canada

Study Locations

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Read the full study record

This page highlights key information. For complete eligibility criteria, study locations, investigator contacts, and the full protocol, visit the original record on ClinicalTrials.gov.

View NCT06316817 on ClinicalTrials.gov